Industrial truck



Jan. 22, 1924. v 148mm C. E. COCHRAN INDUSTRIAL TRUCK Filed Oct. 4, 1920 -3 Sheets-Sheet 1 jz/mfax 9% v' s 55/ fiMe/L, ya.

3 Sheets-Sheet 2 Filed Oct. 4, 1920 MD M Mr 'll ll I NDUSTRIAL TRUCK Flled Oct 4, 1920 Jan. '22 1924.

, c. E. COCHRAN Patented 22, rare.

CLYDE LE. COCHRAN, Q3 CLEVELAND, OHIO.

INDUSTRIM TRB'UGE.

Application filed October a, wee. semi ri /smear.

To all whom, it may concern:

Be it known that l. Cnrnn Qoonmn;

residing at Cleveland, in the county of Cuyahogn and State of Film), have invented e a certain new and useful Improvement in Industrial Trucks, of which the following is a full, clear, and exact desi..; tion, referonce being had to the accompanying drawin s.

%his invention relates to portable cranes ndaptcd to be electrically operated andmounted on self-propelled trucks, and an object of the invention is to arrnn e the usual battery box in such fashion t at it,

is together with the winding" mechanism and 80 to so arrange the crane that the boom. may

be raised and effectively latched by the continued action of the lifting cable. enabling the-load to beswung over the platform and (1e osited thereon, the lowering of the load 3% on '0 the platform being accomplished while the boom is latched in its raised position.

In arranging the crane to embody these characteristics I prefer to employ a telescoping mcmber in tension which connects the boom with the support therefor, and I so connect these elements with a latch that the raising of the crane causes an automatic operation whereby it is latched in its high .osition, but may be manually released to ower the boom. The telewoping tension member forms a tie between the rotatable frame and the upper portion of the boom whereby suflicient strength to support acomaratively heavy load may be accomplished y a comparatively light construction.

The above and other features will be hereinafter more fully set forth in the following description which relates to the drawings and the essential characteristics will be forth in the claims.

In the drawings Fig. 1 spice: of?

portable truck having a crane and embodying the features of my invention; Fig. 2 is a plan of the device shown in Fig. 1; Fig. 3 is a section through the adjustable tie rod; Fig. 4 is an end view of a truck having the crane swung over the side thereof.

The general arrangement of the mechanism embodying the features of my inven tion comprise a crane having a boom supported by and rotatably mounted on a pillar 17 on the platform 11 of a wheel truck,

.WlllCll has a propelling electric motor.

Hoisting mechanism, preferably independent of the truck propelling mechanism, comprises a motor 12. winding drum 13, cable 14- and fall 15'.' The hoisting mechanism is mounted above the battery, which is carried in a crate or box-like structure 16, and both are rotatably supported on the pillar. 17 on the opposite side from the boom. The .weight of the winding mechanism and battery are thus adapted to more or less nearly counterbalance the weight of the boom and the load. 4 Referring to Fig. 1, the base or bearing block 20, which supports the weight of the hoisting mechanism, comprises a castin having a hollow tubular passageway adapte to receive the post 17 and having the flanges 21., 22, to secure it to the platform 11 and front housing 23 of the truck frame. This bearing block is rigidly secured to the platform, preferably in the longitudinal mid line thereof to enable the crane to be swung an equal distance at either side of. the latform. The post 17, extends vertically from the bearing block 20, and forms a ournal for the boom and the mechanism that swings therewith. At the base of these swinging posts is a collar 24 which is adapted to bear against a thrust bearing 25 at the top of the block 20. An upper guide bearing, not: sh0wn, is positioned near the top of the shaft and is used notonly to guide but to take up the side thrust resulting from the difference in Weight and leverage between the hoisting mechanism-and load.

Positioned above the collar 2% on the post 17 and rigidly secured to the collar is a. bracket 26 which has projecting cars 29 having apertures 28 thereon through which a pin is passed to pivotally secure the base of boon; 10. The. boom pivot bracket police rearwardlyr projecting members. 30'

.to serve supports for the battery housing:

16 and as means for rigidly securing the bracket thereto The batteries placed in the casing 26 serve to furnish power for the truck drivin motor as well as to furnish vger for t e motor which elevates the oa The boom pivotally mounted at 29 to the boompivot bracket 26 extends toutwardly and upwardly and carries at the hoisting end a sheave 31 and the guard block 32. The lower portion of the guard block 32 is adapted to be engaged by an abutment 19 on the fall to enable a continued pull on the cable 14 to raise the boom to some elevated position, at which it ma be locked by mechanism hereafter descri d. The boom may be made of any structural material, such as channel or angle bars pressed to the desired form, and preferably comprises two such members spaced apart at the point of pivoted connection and converging so that a sheave may be readily confined between them at the hoistin end. 4

e hoisting drum 13 together with the motor and the battery 35 (which furnishes current for both the raising motor and the propelling motor) is ositioned on the housmg 16 and supporte by the standards 35, 36, which carry the upper guide bearjng on the post 17. The lower portion of the housing 16 is adapted to clear that portion 37 of the truck frame which is above the ropelling motor. Since the battery housing 18 adapted to rotate whetiever the boom is rotated about the post 17 the rear portion 38 of the housing 16 is arcuate in form. The housing is preferably a skeleton structure built of steel bars as 40 and 41.

A handle 42 may be rigidly secured to the housin to enable the boom to be manually rotated; and a retaining lever 43 operated by the handle 44 may serve to lock the crane to the standard 39 at any desired position. Suitable notches in the arcuate ortion 38 of the housing may be employe to secure the crane in any desired position.

As heretofore stated, the hoistin drum 13 may be used to'raise the boom w en the fall 15 engages the guide block 32. To se-- cure the boom in any desired position, however, I provide a telescopin tie rod comprising interengaging mem rs, one of which is connected to the boom and the other to the frame. As shown in Fi 3 my interengaging device com rises a toot ed rod 45, the outer end of w ich is formed into a fork 34 pivotally connected to the boom by the same pivot pin 33 on which the sheave 31 is mounted, the other end of thisrod being slidably mounted in the tubular portion 46, of the guide bar47. The teeth on the bar 45 are of ratchet form having their on gingisurfaces undercut to prevent the pew 48, siipported by the bar 46 and aasasai adapted to engage the teeth from below, from dropping out when the tie rod is substantially horizontal. As shown in Fig. 32,

the guide bar 47 is pivotally mounted b a pin 49 to the bracket 50 rigidly secur to the frame. A s ace is provided between the arms of the guide bar 47 to permit the rod 45 to move inwardly as the boom is raised.

When the boom 18 being raised the bar 45 will move inwsr dly, its teeth passing over the pawl 48, whiclitsprings into the snccea sive notches. When the desired height is reached the pawl is automatically seated in the adjacent notch and held therein b the flttlOIl of the spring 51. This spring are against an abutment 52 and shoves a rod forwardly which, through the rocker 53 and link 54, urges the pawl 48 upwardly.

To lower the boom the fall 15 is brou ht into engagement with the block 32 an a slight tension exerted thereon to relieve the pressure of the engaging tooth of the rod 45 against the pawl 48. A handle 56 on the rod 55 is provided for the operator to manuall pull the rod and thus disengage the paw 48. When the boom is lowered to the desired height the operator may release the handle whereupon the spring will again. urge the pawl into engagement with the ad j'u'ent tooth of the bar 45, thereby bringing die boom to a sto In operation, the rotary motion of the boom is obtained when the operator disengages the latch 43 and urges the crane about the post 17 by means of a manual'force. exerted on the handle 42. As the boom is swung to the right or left of the'platform the hoisting mechanism together with the battery is swung to the left or right and is always opposite and counterbalanoes the boom with its average load. Assumin that the boom is in a position shown in in 1 line in Fig. 4, then to lower the boom the fall 15 is brought into engagement with the guidoblock and a slight tension is put on the hoisting cable, ther by relieving the pressure of the ratchet b r 45 against the retaining pawl 48. The operator then ulls the handle 56 against the tension 0 the spring 51, therebyi releasing the pawl. The handle is held manually in this position and the winding cable is paid out, whereupon the weight of the boom will cause it to move downwardly while the tall lfi'is held against the block 32. When the desimd osition is attained the operator releases the andle 56,

and the pawl engaging the adjacent tooth holds the boom, and a iurther ayin out of the hoistin cable permits t e is]. 15 to leave the bTock 32 and to drop, due to its own weight.

From the foregoing description it will be seen that I have provided a hoistingmeohanism which may be readily adaptetil' for mounting on a portable touch with new till ill!

LeSLSKii little reduction of the ioading soace theroon and will be efiectiveiy counter bsieiice i337 she ifoaiatery arid raising mechanism to matintein stability in any position iii the boom; also izhai; 1 have provided on. adjusisbie tie and which is adopted 20 be second to the boom at tho poioi; where the load is so? posted. thereon. fur ishing by oompsrstiveiy iigho construcsion, the requisite stssngth to effectiveiy withstand the strain.

The mechanism is compass, e'fiicieiit'snd cs.- psbie of being cheaply msnofeomed.

Having thus described my invention. ii clsimz- 1. The combinsiioziWi."i1 viieeifciockiisving; s from; frame housing for U peiiing; mechanism and s. iiorizonioi. ioaci sup so fling phi-form esensiiog reorwssdly isom Aousiog, of e bsaei'eig moomed. or; she rm and abut-sin rem? of the boss veri ieai post cs ied by She bmcket. swivsieol on (Joe post s thrust 1) g If oefiweeo.v said member iiio "m. a 3.0050. pivoied seiai member near its lower sod, zinc} is ii'sme fol if bet box exiemiiii in s. crane. the oombiziioiioii with s sup posh of boom pivotoii g mounted thereon. a iioitiiiw Top leading oi 's the iooom hoiscing; on sei'iism ,o:u i'ied"by support.

memos moumiiig tile soppori: wizersoy ihe iaoom mechanism simultaneously rotated, telescopic tie rods for rs the boom in eievsiied position, said; rods comprising; inter-engaging memhers, one member thereof being connected to the Sapporo, the other member being con- .oecied the boom, andmeons for manusiiy io the inter-engaging member.

3. In y the cc mbiimilion Wiiii s roibstsiiie sup .2. of boom p votsiii he support zrnci w n and pivotoliy oonnevi d 'co them and comprising a ratchet has a. ieiesoo oing memi'iver tilfli'fiiffii, and means 1oz holding she ratchet oer i various posit-ions the tubular member.

In a crane. the combination with a sup;

port. of s boom pivossiiy mounted thez'eoii.

inset-engaging; ms obeys hoiweon die support and i116 boo-m. ass-morning; one mnmiier pivohiiij; mommies? or Ihe support another member pivoiz iiy mu mimi :1? the.

free end. of ihe boom, oiie of said memhcrs having ratchet teeth, pawl Adapted to (533' iiie i'ooiiiiefi member. am? means for Ofieililiill' the pool in release the iooiiiml me! her. tain moons iii-in ooerzibio imiw 1 (I ponciont v or the means for mov ng me boom.

5 The (omhinsiion i1 2: ii'i'wei ii-mi;

amino" :2 from: Home ilCvilSiHQ for His truck mopeiiing mechani m and :1 iioi'izoiii'si man! so fi'uci: pro

supporting platform extemi'ing rearwardly s osoie leading from she winding mocha-Y iiism over the boom, and an adjustable tie connection between the upper oortlon of the boom and the member siyoportmg she Wmdmechanism.

6. In 9. cross. the combination with s ross'zohie suppomf of a boom pivoieiiy .ioousted. scent the lower extremity of the supggiort o. piasform carried by the support and extending in a. direction opposite to the boom, s batiei'y housing mounted on the piaifosm, a motor operated winding mechanism .zoosted upon the battery housing. o. flexible member extending from the windin mechanism the end of the boom and boom. ecifusting means coonecieci so the outer n5. of the boom st one end and the suppoi'i adjacent die Winding mechanism st; she other end and moousiiy operatedineans for rcieasing ssid lasinsmed means, wiieieby the boom may be iowsred by :i paying out i oom support disposed above the battery housing, a. Winding mechanism mounted iLiKBIQOZR, o. flexible member extending from the winding mecimnism over the opposite enci of iliifi boom and boom positioning means comprising :1 pair of members pivosally connecteii to the boom and said boom sup- ".port. and latching means therebetween for locking the boom 3 positions.

means "for 'itiio boom about diopivot,

in various elevated 8. The combination with a wheel truck havin Y e fi'ons frame housingior the truck propeiing mechanism and iimizostoi load supporting: phi-form extending i'esi'wm'diy iron] said i'ionsing", of s vci'ticaliy amending member secured to said platform, a rotatable support moiuii'ed on said member. s boom pivoiisiiy mounted on the support adjacent its lower extremity. a platform on said ro'tatabio member, a battery housing mount:- ed O'ii said platform, a Winding; mechanism mounted on said rotatabiemembei shove the battery housing, an upright frame member rigid with Eliot-ruck frame and (-fieildillg mijaceni the battery housing, means for locking the boom in an adjusted position, and means on said upright member for engaging the boom support whereby rotation of said boom supporting member may be prevented.

9. The combination with a wheei truck having a front frame housing for the propelling mechanism thereof, a horizontai loaid supporting platform extending: reaiyvardly from said housing, a pillar memberurising from the platform, a boom support pivotali mounted thereon, a. boom pivotel ly oonneote to the support.adjacent its lower extremity, a frame structure extending above said truck frame housing and means mounted *whiemaby rotation of meieei thereon, 'a barmember pivotaliy connected= to .the boom, a tubular member pivotally connected to the su port, and means ass/o ciated with the tubu er member whereby the bar member and the tubular member may be locked together and the boom maintained in an adjusted position.

In testimony whereof, I hereunto afiix my signature. CLYDE E. COUHRAN. 

